Heney bandall



(No Model.)

1-1. RANDALL.

BOILEE TUBE CLEANER.

No. 377,171. Patented Jan. 81, 1888.

INVENTOR WITNE'SSES I alduLl-/fr ATTORNEYS.

N. Finns. Phuumogupher. washington. n. c,

linirnn *rares .arenr triceQ HENRY RANDALL, OF BROOKLYN, NEV YORK.

BOILER-TUBE CLEANER.

SPECIFICATION 'forming part of Letters Patent No. 377,171. dated January3l, 1888,

(No model.)

T all whom it may concern.:

Be it known that I, HENRY RANDALL, of Brooklyn, in the county of Kingsand State of New York, haveinvented a new and Improved Boiler-TubeCleaner, of which the following is a full, clear, and exact description.

My invention relates to a device for cleaning boiler-tubes, and has forits object to provide a cleaner of simple and cheap const-ruction, whichmay be expanded in a tube, and which also will eut away scale wheneither pushed or drawn through the tube.

The invention consists in the construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims. Y Reference is to be had tothe accompanying drawings,forming a part of this specication, in which similar letters ofreference indicate corresponding parts in all the figures.

Figure l is a central vertical section through the device. Fig. 2is aplan View of one of the expanding-plates, and Fig. 3 is an end view ofthe same.

In carrying out the invention a tube, A, is provided ofsuitable lengthand material, and within said tube, about centrally the sanie, acircular block, B, is held to slide, having its rearward movementlimited by a key, b, pro

3o jecting through the tube, as shown in Fig. l,

the block being prevented from turning by a screw or inwardly-projectingstud, b', projecting within the tube, which screw or stud is adapted totravel in a groove, b2, cut longitudinally the outer surface oftheblock. The block B at its outer end is provided with a recess, e, havinginwardly-tapering walls, and a threaded aperture, c, centrally the outerend. rlhe threaded end l of a rod, I), is screwed into the block Bthrough aperture a', and supported within the tube A through the mediumof three or more screws, d, projecting through the tube from the outsideinto an annular groove, d', produced upon the rod.

The rod D Inay be made of any desired length and in two or moresections, the rod at its extreme outer end being provided with asuitable handle or wheel, cl2. The tubing incasing the rod may be of onepiece, or various sections coupled together, as shown at cl3, or unitedin any approved manner.

At the end of the tube A a circular metal block, E, having a convexperiphery, is rigidly held by three or more screws, e, passing throughthe tube and into the block. The inner side of the said block E isprovided with a central integral outwardly-projecting stem, e,whiel1terminates in a disk, E', as shown in Fig. I.

Three or more plates, F, are provided segmental in crosssection, widerat one end than the other, andbent at a slight inclination up- .ward ata point, f, near the center, (shown in Fig. 2,) the widest end of eachplate having an integral liange, f', projecting outwardly at rightangles to the body. The plates F are adapted for insertion at theircontracted end in the tube A, the under surface of each plate, near thepoint f, being in contact with the periphery ofthe block E, and are heldin contact with the block with slight lateral play by the screws e,passing through the casing and through elongated slots in the plates Finto the block E. The inner and outer ends of the plates thus placedform a circle, the reduced ends entering the recess a in contact withthe wall thereof, and the flanged outer ends surrounding the disk E.

In operation the cleaner is entered the tube to be cleaned and the rod Dis turned, whereupon the block B, riding over the inner ends oi' theplates F, fulcruined upon the block E, expands the outer ends until theiiange f is in close contact with the inner surface ofthe tube. Thecleaner may now be pushed in cutting and carrying the scales before it,and then pulled back, if desired, cutting each way.

Having thus fully described lny invention, I claim as new and desire tosecure by Letters Patentl. The coinbination,with a tube and flangedplates fulcruined upon a block at one end of said tube, of anexpanding-block held to slide in said tube, provided with a taperingrecess and a threaded aperture, and a rod swiveled in said tube, andhaving itsinnerend threaded to carry said expanding-block, substantiallyas shown and described.

2. In a boiler-tube cleaner, the combination, with a tubular casing, arod held to turn in said casing, and a series of centrallydepressedsegmental plates provided with a flanged outer ICO end, and a blocksecured in the end of said tube, upon which the said plates arefulcrurned, of an expanding-block traveling upon the outer end of therod and adapted to bear upon the said casing, provided with athreaded'outer end, and an expanding-block traveling upon p the threadedportion of the rod, provided with a longitudinal recess havingrearwardly and inwardly tapering Walls, of a circular block secured atthe forward end of the casing, and a series of angularcentrally-depressed plates, Wider at the outer than at the inner end,fulcrumed upon the said end block and projecting from thecasing,provided at their outer ends with a ange extending at rightangles to the body, and having their inner ends in engagement with thesaid expanding-block, sub` stantially as set forth. v HENRY RANDALL.

Witnesses: i

J. F. ACKER, J r., EDWD. M. CLARK.

